#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
@ProjectName: Homalos_v2
@FileName   : dependency_checker
@Date       : 2025/7/23 15:28
@Author     : Donny
@Email      : donnymoving@gmail.com
@Software   : PyCharm
@Description:
依赖检查器模块
提供策略启动前的依赖验证功能，包括网关连接、合约信息、账户资金等检查。
"""
import asyncio
import time
from dataclasses import dataclass, field
from datetime import datetime
from enum import Enum
from typing import Dict, List, Optional, Any

from src.config.config_manager import ConfigManager
from src.core.event import Event, EventType
from src.core.event_bus import EventBus
from src.core.logger import get_logger


class DependencyType(Enum):
    """依赖类型枚举"""
    GATEWAY_CONNECTION = "gateway_connection"
    CONTRACT_INFO = "contract_info"
    ACCOUNT_BALANCE = "account_balance"
    MARKET_HOURS = "market_hours"
    RISK_LIMITS = "risk_limits"
    DATA_FEED = "data_feed"


class CheckStatus(Enum):
    """检查状态枚举"""
    PASSED = "passed"
    FAILED = "failed"
    WARNING = "warning"
    SKIPPED = "skipped"


@dataclass
class DependencyCheckItem:
    """单个依赖检查项"""
    dependency_type: DependencyType
    status: CheckStatus
    message: str
    details: Dict[str, Any] = field(default_factory=dict)
    check_time: datetime = field(default_factory=datetime.now)
    retry_count: int = 0
    duration: float = 0.0


@dataclass
class DependencyCheckResult:
    """依赖检查结果"""
    strategy_id: str
    overall_status: CheckStatus
    check_items: List[DependencyCheckItem] = field(default_factory=list)
    total_checks: int = 0
    passed_checks: int = 0
    failed_checks: int = 0
    warning_checks: int = 0
    check_duration: float = 0.0
    recommendations: List[str] = field(default_factory=list)
    check_time: datetime = field(default_factory=datetime.now)

    def __post_init__(self):
        """计算统计信息"""
        self.total_checks = len(self.check_items)
        self.passed_checks = sum(1 for item in self.check_items if item.status == CheckStatus.PASSED)
        self.failed_checks = sum(1 for item in self.check_items if item.status == CheckStatus.FAILED)
        self.warning_checks = sum(1 for item in self.check_items if item.status == CheckStatus.WARNING)

        # 确定整体状态
        if self.failed_checks > 0:
            self.overall_status = CheckStatus.FAILED
        elif self.warning_checks > 0:
            self.overall_status = CheckStatus.WARNING
        else:
            self.overall_status = CheckStatus.PASSED


class DependencyChecker:
    """依赖检查器

    负责在策略启动前检查各种依赖条件，确保策略能够正常运行。
    """

    def __init__(self, event_bus: EventBus, config: ConfigManager):
        self.event_bus = event_bus
        self.config = config
        self.logger = get_logger(self.__class__.__name__)

        # 配置参数
        self.check_timeout = config.get("strategy_management.dependency_check.timeout", 30)
        self.retry_count = config.get("strategy_management.dependency_check.retry_count", 3)
        self.cache_duration = config.get("strategy_management.dependency_check.cache_duration", 300)
        self.parallel_checks = config.get("strategy_management.dependency_check.parallel_checks", True)

        # 检查项配置
        self.check_config = config.get("strategy_management.dependency_check.checks", {})

        # 缓存
        self._check_cache: Dict[str, DependencyCheckResult] = {}

        self.logger.info("依赖检查器初始化完成")

    async def check_gateway_connection(self, gateway_name: str) -> DependencyCheckItem:
        """检查网关连接状态"""
        start_time = time.time()
        check_config = self.check_config.get("gateway_connection", {})

        if not check_config.get("enabled", True):
            return DependencyCheckItem(
                dependency_type=DependencyType.GATEWAY_CONNECTION,
                status=CheckStatus.SKIPPED,
                message=f"网关连接检查已禁用",
                duration=time.time() - start_time
            )

        try:
            timeout = check_config.get("timeout", 10)

            # 发送网关状态查询事件
            event = Event(
                event_type=EventType.GATEWAY_STATUS_REQUEST,
                data={"gateway_name": gateway_name},
                source="dependency_checker"
            )

            # 等待网关响应
            response = await asyncio.wait_for(
                self._wait_for_gateway_response(gateway_name),
                timeout=timeout
            )

            if response and response.get("connected", False):
                return DependencyCheckItem(
                    dependency_type=DependencyType.GATEWAY_CONNECTION,
                    status=CheckStatus.PASSED,
                    message=f"网关 {gateway_name} 连接正常",
                    details=response,
                    duration=time.time() - start_time
                )
            else:
                return DependencyCheckItem(
                    dependency_type=DependencyType.GATEWAY_CONNECTION,
                    status=CheckStatus.FAILED,
                    message=f"网关 {gateway_name} 连接失败",
                    details=response or {},
                    duration=time.time() - start_time
                )

        except asyncio.TimeoutError:
            return DependencyCheckItem(
                dependency_type=DependencyType.GATEWAY_CONNECTION,
                status=CheckStatus.FAILED,
                message=f"网关 {gateway_name} 连接检查超时",
                duration=time.time() - start_time
            )
        except Exception as e:
            self.logger.error(f"网关连接检查异常: {e}")
            return DependencyCheckItem(
                dependency_type=DependencyType.GATEWAY_CONNECTION,
                status=CheckStatus.FAILED,
                message=f"网关连接检查异常: {str(e)}",
                duration=time.time() - start_time
            )

    async def check_contract_info(self, symbol: str, exchange: str) -> DependencyCheckItem:
        """检查合约信息完整性"""
        start_time = time.time()
        check_config = self.check_config.get("contract_info", {})

        if not check_config.get("enabled", True):
            return DependencyCheckItem(
                dependency_type=DependencyType.CONTRACT_INFO,
                status=CheckStatus.SKIPPED,
                message="合约信息检查已禁用",
                duration=time.time() - start_time
            )

        try:
            timeout = check_config.get("timeout", 5)

            # 查询合约信息
            contract_info = await asyncio.wait_for(
                self._get_contract_info(symbol, exchange),
                timeout=timeout
            )

            if contract_info:
                # 检查必要字段
                required_fields = ["symbol", "exchange", "product_type", "size", "price_tick"]
                missing_fields = [field for field in required_fields if field not in contract_info]

                if missing_fields:
                    return DependencyCheckItem(
                        dependency_type=DependencyType.CONTRACT_INFO,
                        status=CheckStatus.WARNING,
                        message=f"合约 {symbol}.{exchange} 信息不完整，缺少字段: {missing_fields}",
                        details=contract_info,
                        duration=time.time() - start_time
                    )
                else:
                    return DependencyCheckItem(
                        dependency_type=DependencyType.CONTRACT_INFO,
                        status=CheckStatus.PASSED,
                        message=f"合约 {symbol}.{exchange} 信息完整",
                        details=contract_info,
                        duration=time.time() - start_time
                    )
            else:
                return DependencyCheckItem(
                    dependency_type=DependencyType.CONTRACT_INFO,
                    status=CheckStatus.FAILED,
                    message=f"无法获取合约 {symbol}.{exchange} 信息",
                    duration=time.time() - start_time
                )

        except asyncio.TimeoutError:
            return DependencyCheckItem(
                dependency_type=DependencyType.CONTRACT_INFO,
                status=CheckStatus.FAILED,
                message=f"合约 {symbol}.{exchange} 信息查询超时",
                duration=time.time() - start_time
            )
        except Exception as e:
            self.logger.error(f"合约信息检查异常: {e}")
            return DependencyCheckItem(
                dependency_type=DependencyType.CONTRACT_INFO,
                status=CheckStatus.FAILED,
                message=f"合约信息检查异常: {str(e)}",
                duration=time.time() - start_time
            )

    async def check_account_balance(self, required_margin: float, currency: str = "CNY") -> DependencyCheckItem:
        """检查账户资金充足性"""
        start_time = time.time()
        check_config = self.check_config.get("account_balance", {})

        if not check_config.get("enabled", True):
            return DependencyCheckItem(
                dependency_type=DependencyType.ACCOUNT_BALANCE,
                status=CheckStatus.SKIPPED,
                message="账户资金检查已禁用",
                duration=time.time() - start_time
            )

        try:
            # 获取账户信息
            account_info = await self._get_account_info()

            if not account_info:
                return DependencyCheckItem(
                    dependency_type=DependencyType.ACCOUNT_BALANCE,
                    status=CheckStatus.FAILED,
                    message="无法获取账户信息",
                    duration=time.time() - start_time
                )

            available_balance = account_info.get("available", 0)
            minimum_margin_ratio = check_config.get("minimum_margin_ratio", 0.2)
            required_balance = required_margin * (1 + minimum_margin_ratio)

            if available_balance >= required_balance:
                return DependencyCheckItem(
                    dependency_type=DependencyType.ACCOUNT_BALANCE,
                    status=CheckStatus.PASSED,
                    message=f"账户资金充足，可用: {available_balance:.2f} {currency}，需要: {required_balance:.2f} {currency}",
                    details={
                        "available_balance": available_balance,
                        "required_balance": required_balance,
                        "currency": currency,
                        "margin_ratio": minimum_margin_ratio
                    },
                    duration=time.time() - start_time
                )
            elif available_balance >= required_margin:
                return DependencyCheckItem(
                    dependency_type=DependencyType.ACCOUNT_BALANCE,
                    status=CheckStatus.WARNING,
                    message=f"账户资金紧张，可用: {available_balance:.2f} {currency}，建议: {required_balance:.2f} {currency}",
                    details={
                        "available_balance": available_balance,
                        "required_balance": required_balance,
                        "currency": currency,
                        "margin_ratio": minimum_margin_ratio
                    },
                    duration=time.time() - start_time
                )
            else:
                return DependencyCheckItem(
                    dependency_type=DependencyType.ACCOUNT_BALANCE,
                    status=CheckStatus.FAILED,
                    message=f"账户资金不足，可用: {available_balance:.2f} {currency}，需要: {required_margin:.2f} {currency}",
                    details={
                        "available_balance": available_balance,
                        "required_balance": required_balance,
                        "currency": currency
                    },
                    duration=time.time() - start_time
                )

        except Exception as e:
            self.logger.error(f"账户资金检查异常: {e}")
            return DependencyCheckItem(
                dependency_type=DependencyType.ACCOUNT_BALANCE,
                status=CheckStatus.FAILED,
                message=f"账户资金检查异常: {str(e)}",
                duration=time.time() - start_time
            )

    async def check_market_hours(self, symbol: str, exchange: str) -> DependencyCheckItem:
        """检查市场交易时间"""
        start_time = time.time()
        check_config = self.check_config.get("market_hours", {})

        if not check_config.get("enabled", True):
            return DependencyCheckItem(
                dependency_type=DependencyType.MARKET_HOURS,
                status=CheckStatus.SKIPPED,
                message="市场时间检查已禁用",
                duration=time.time() - start_time
            )

        try:
            current_time = datetime.now()
            market_info = await self._get_market_info(symbol, exchange)

            if not market_info:
                return DependencyCheckItem(
                    dependency_type=DependencyType.MARKET_HOURS,
                    status=CheckStatus.WARNING,
                    message=f"无法获取 {symbol}.{exchange} 市场时间信息",
                    duration=time.time() - start_time
                )

            is_trading_time = self._is_trading_time(current_time, market_info)
            allow_pre_market = check_config.get("allow_pre_market", False)

            if is_trading_time:
                return DependencyCheckItem(
                    dependency_type=DependencyType.MARKET_HOURS,
                    status=CheckStatus.PASSED,
                    message=f"{symbol}.{exchange} 当前为交易时间",
                    details=market_info,
                    duration=time.time() - start_time
                )
            elif allow_pre_market:
                return DependencyCheckItem(
                    dependency_type=DependencyType.MARKET_HOURS,
                    status=CheckStatus.WARNING,
                    message=f"{symbol}.{exchange} 当前为非交易时间，但允许盘前启动",
                    details=market_info,
                    duration=time.time() - start_time
                )
            else:
                return DependencyCheckItem(
                    dependency_type=DependencyType.MARKET_HOURS,
                    status=CheckStatus.FAILED,
                    message=f"{symbol}.{exchange} 当前为非交易时间",
                    details=market_info,
                    duration=time.time() - start_time
                )

        except Exception as e:
            self.logger.error(f"市场时间检查异常: {e}")
            return DependencyCheckItem(
                dependency_type=DependencyType.MARKET_HOURS,
                status=CheckStatus.FAILED,
                message=f"市场时间检查异常: {str(e)}",
                duration=time.time() - start_time
            )

    async def check_risk_limits(self, strategy_config: Dict[str, Any]) -> DependencyCheckItem:
        """检查风险限制"""
        start_time = time.time()
        check_config = self.check_config.get("risk_limits", {})

        if not check_config.get("enabled", True):
            return DependencyCheckItem(
                dependency_type=DependencyType.RISK_LIMITS,
                status=CheckStatus.SKIPPED,
                message="风险限制检查已禁用",
                duration=time.time() - start_time
            )

        try:
            issues = []
            warnings = []

            # 检查最大持仓
            max_position = strategy_config.get("max_position", 0)
            system_max_position = check_config.get("max_position_size", 1000000)

            if max_position > system_max_position:
                issues.append(f"策略最大持仓 {max_position} 超过系统限制 {system_max_position}")

            # 检查最大单笔订单
            max_order_size = strategy_config.get("max_order_size", 0)
            if max_order_size > max_position:
                warnings.append(f"最大单笔订单 {max_order_size} 大于最大持仓 {max_position}")

            # 检查止损设置
            stop_loss = strategy_config.get("stop_loss", 0)
            if stop_loss <= 0:
                warnings.append("未设置止损或止损设置无效")

            # 检查风险度
            risk_ratio = strategy_config.get("risk_ratio", 0)
            max_risk_ratio = check_config.get("max_risk_ratio", 0.1)

            if risk_ratio > max_risk_ratio:
                issues.append(f"风险度 {risk_ratio} 超过系统限制 {max_risk_ratio}")

            if issues:
                return DependencyCheckItem(
                    dependency_type=DependencyType.RISK_LIMITS,
                    status=CheckStatus.FAILED,
                    message=f"风险限制检查失败: {'; '.join(issues)}",
                    details={"issues": issues, "warnings": warnings},
                    duration=time.time() - start_time
                )
            elif warnings:
                return DependencyCheckItem(
                    dependency_type=DependencyType.RISK_LIMITS,
                    status=CheckStatus.WARNING,
                    message=f"风险限制检查有警告: {'; '.join(warnings)}",
                    details={"warnings": warnings},
                    duration=time.time() - start_time
                )
            else:
                return DependencyCheckItem(
                    dependency_type=DependencyType.RISK_LIMITS,
                    status=CheckStatus.PASSED,
                    message="风险限制检查通过",
                    duration=time.time() - start_time
                )

        except Exception as e:
            self.logger.error(f"风险限制检查异常: {e}")
            return DependencyCheckItem(
                dependency_type=DependencyType.RISK_LIMITS,
                status=CheckStatus.FAILED,
                message=f"风险限制检查异常: {str(e)}",
                duration=time.time() - start_time
            )

    async def check_data_feed(self, symbols: List[str]) -> DependencyCheckItem:
        """检查数据源可用性"""
        start_time = time.time()
        check_config = self.check_config.get("data_feed", {})

        if not check_config.get("enabled", True):
            return DependencyCheckItem(
                dependency_type=DependencyType.DATA_FEED,
                status=CheckStatus.SKIPPED,
                message="数据源检查已禁用",
                duration=time.time() - start_time
            )

        try:
            timeout = check_config.get("timeout", 15)
            failed_symbols = []
            warning_symbols = []

            for symbol in symbols:
                try:
                    # 检查数据源连接
                    data_status = await asyncio.wait_for(
                        self._check_symbol_data_feed(symbol),
                        timeout=timeout / len(symbols)
                    )

                    if not data_status.get("connected", False):
                        failed_symbols.append(symbol)
                    elif data_status.get("delay", 0) > 5000:  # 延迟超过5秒
                        warning_symbols.append(symbol)

                except asyncio.TimeoutError:
                    failed_symbols.append(symbol)

            if failed_symbols:
                return DependencyCheckItem(
                    dependency_type=DependencyType.DATA_FEED,
                    status=CheckStatus.FAILED,
                    message=f"数据源检查失败，无法连接: {failed_symbols}",
                    details={"failed_symbols": failed_symbols, "warning_symbols": warning_symbols},
                    duration=time.time() - start_time
                )
            elif warning_symbols:
                return DependencyCheckItem(
                    dependency_type=DependencyType.DATA_FEED,
                    status=CheckStatus.WARNING,
                    message=f"数据源延迟较高: {warning_symbols}",
                    details={"warning_symbols": warning_symbols},
                    duration=time.time() - start_time
                )
            else:
                return DependencyCheckItem(
                    dependency_type=DependencyType.DATA_FEED,
                    status=CheckStatus.PASSED,
                    message="数据源检查通过",
                    duration=time.time() - start_time
                )

        except Exception as e:
            self.logger.error(f"数据源检查异常: {e}")
            return DependencyCheckItem(
                dependency_type=DependencyType.DATA_FEED,
                status=CheckStatus.FAILED,
                message=f"数据源检查异常: {str(e)}",
                duration=time.time() - start_time
            )

    async def run_all_checks(self, strategy_config: Dict[str, Any]) -> DependencyCheckResult:
        """运行所有依赖检查"""
        start_time = time.time()
        strategy_id = strategy_config.get("strategy_id", "unknown")

        self.logger.info(f"开始为策略 {strategy_id} 运行依赖检查")

        # 检查缓存
        cached_result = self.get_cached_result(strategy_id)
        if cached_result:
            self.logger.info(f"使用缓存的依赖检查结果: {strategy_id}")
            return cached_result

        check_items = []

        try:
            # 准备检查任务
            check_tasks = []

            # 网关连接检查
            gateway_name = strategy_config.get("gateway", "default")
            check_tasks.append(self.check_gateway_connection(gateway_name))

            # 合约信息检查
            symbols = strategy_config.get("symbols", [])
            for symbol_info in symbols:
                if isinstance(symbol_info, dict):
                    symbol = symbol_info.get("symbol")
                    exchange = symbol_info.get("exchange")
                else:
                    symbol = symbol_info
                    exchange = "default"

                if symbol:
                    check_tasks.append(self.check_contract_info(symbol, exchange))

            # 账户资金检查
            required_margin = strategy_config.get("required_margin", 10000)
            check_tasks.append(self.check_account_balance(required_margin))

            # 市场时间检查
            if symbols:
                symbol_info = symbols[0]
                if isinstance(symbol_info, dict):
                    symbol = symbol_info.get("symbol")
                    exchange = symbol_info.get("exchange")
                else:
                    symbol = symbol_info
                    exchange = "default"

                if symbol:
                    check_tasks.append(self.check_market_hours(symbol, exchange))

            # 风险限制检查
            check_tasks.append(self.check_risk_limits(strategy_config))

            # 数据源检查
            symbol_list = []
            for symbol_info in symbols:
                if isinstance(symbol_info, dict):
                    symbol = symbol_info.get("symbol")
                else:
                    symbol = symbol_info

                if symbol:
                    symbol_list.append(symbol)

            if symbol_list:
                check_tasks.append(self.check_data_feed(symbol_list))

            # 执行检查
            if self.parallel_checks:
                check_items = await asyncio.gather(*check_tasks, return_exceptions=True)
            else:
                check_items = []
                for task in check_tasks:
                    try:
                        result = await task
                        check_items.append(result)
                    except Exception as e:
                        self.logger.error(f"检查任务异常: {e}")
                        check_items.append(DependencyCheckItem(
                            dependency_type=DependencyType.GATEWAY_CONNECTION,  # 默认类型
                            status=CheckStatus.FAILED,
                            message=f"检查异常: {str(e)}"
                        ))

            # 处理异常结果
            valid_check_items = []
            for item in check_items:
                if isinstance(item, Exception):
                    self.logger.error(f"检查项异常: {item}")
                    valid_check_items.append(DependencyCheckItem(
                        dependency_type=DependencyType.GATEWAY_CONNECTION,  # 默认类型
                        status=CheckStatus.FAILED,
                        message=f"检查异常: {str(item)}"
                    ))
                else:
                    valid_check_items.append(item)

            # 创建结果
            result = DependencyCheckResult(
                strategy_id=strategy_id,
                overall_status=CheckStatus.PASSED,  # 将在 __post_init__ 中重新计算
                check_items=valid_check_items,
                check_duration=time.time() - start_time
            )

            # 生成建议
            result.recommendations = self._generate_recommendations(result)

            # 缓存结果
            self._check_cache[strategy_id] = result

            # 发布事件
            event = Event(
                event_type=EventType.STRATEGY_DEPENDENCY_CHECK,
                data={
                    "strategy_id": strategy_id,
                    "result": result,
                    "status": result.overall_status.value
                },
                source="dependency_checker"
            )
            self.event_bus.publish(event)

            self.logger.info(f"策略 {strategy_id} 依赖检查完成，状态: {result.overall_status.value}")
            return result

        except Exception as e:
            self.logger.error(f"依赖检查异常: {e}")
            error_result = DependencyCheckResult(
                strategy_id=strategy_id,
                overall_status=CheckStatus.FAILED,
                check_items=[DependencyCheckItem(
                    dependency_type=DependencyType.GATEWAY_CONNECTION,
                    status=CheckStatus.FAILED,
                    message=f"依赖检查异常: {str(e)}"
                )],
                check_duration=time.time() - start_time
            )
            return error_result

    def get_cached_result(self, strategy_id: str) -> Optional[DependencyCheckResult]:
        """获取缓存的检查结果"""
        if strategy_id in self._check_cache:
            cached_result = self._check_cache[strategy_id]
            # 检查缓存是否过期
            if (datetime.now() - cached_result.check_time).total_seconds() < self.cache_duration:
                return cached_result
            else:
                # 清除过期缓存
                del self._check_cache[strategy_id]
        return None

    def clear_cache(self, strategy_id: Optional[str] = None) -> None:
        """清除检查缓存"""
        if strategy_id:
            self._check_cache.pop(strategy_id, None)
            self.logger.info(f"清除策略 {strategy_id} 的依赖检查缓存")
        else:
            self._check_cache.clear()
            self.logger.info("清除所有依赖检查缓存")

    def _generate_recommendations(self, result: DependencyCheckResult) -> List[str]:
        """生成建议"""
        recommendations = []

        for item in result.check_items:
            if item.status == CheckStatus.FAILED:
                if item.dependency_type == DependencyType.GATEWAY_CONNECTION:
                    recommendations.append("检查网关配置和网络连接")
                elif item.dependency_type == DependencyType.CONTRACT_INFO:
                    recommendations.append("确认合约代码正确并已订阅")
                elif item.dependency_type == DependencyType.ACCOUNT_BALANCE:
                    recommendations.append("增加账户资金或降低策略风险")
                elif item.dependency_type == DependencyType.MARKET_HOURS:
                    recommendations.append("等待市场开盘或启用盘前交易")
                elif item.dependency_type == DependencyType.RISK_LIMITS:
                    recommendations.append("调整策略风险参数")
                elif item.dependency_type == DependencyType.DATA_FEED:
                    recommendations.append("检查数据源连接和订阅")

            elif item.status == CheckStatus.WARNING:
                if item.dependency_type == DependencyType.ACCOUNT_BALANCE:
                    recommendations.append("建议增加账户资金以提高安全边际")
                elif item.dependency_type == DependencyType.MARKET_HOURS:
                    recommendations.append("注意非交易时间的风险")
                elif item.dependency_type == DependencyType.DATA_FEED:
                    recommendations.append("监控数据延迟情况")

        return list(set(recommendations))  # 去重

    # 辅助方法（需要根据实际系统实现）
    async def _wait_for_gateway_response(self, gateway_name: str) -> Optional[Dict[str, Any]]:
        """等待网关响应"""
        # TODO: 实现网关状态查询逻辑
        await asyncio.sleep(0.1)  # 模拟查询延迟
        return {"connected": True, "status": "active"}

    async def _get_contract_info(self, symbol: str, exchange: str) -> Optional[Dict[str, Any]]:
        """获取合约信息"""
        # TODO: 实现合约信息查询逻辑
        await asyncio.sleep(0.1)  # 模拟查询延迟
        return {
            "symbol": symbol,
            "exchange": exchange,
            "product_type": "futures",
            "size": 10,
            "price_tick": 0.2
        }

    async def _get_account_info(self) -> Optional[Dict[str, Any]]:
        """获取账户信息"""
        # TODO: 实现账户信息查询逻辑
        await asyncio.sleep(0.1)  # 模拟查询延迟
        return {"available": 100000, "balance": 150000, "margin": 50000}

    async def _get_market_info(self, symbol: str, exchange: str) -> Optional[Dict[str, Any]]:
        """获取市场信息"""
        # TODO: 实现市场信息查询逻辑
        await asyncio.sleep(0.1)  # 模拟查询延迟
        return {
            "trading_hours": [("09:00", "11:30"), ("13:30", "15:00")],
            "timezone": "Asia/Shanghai"
        }

    def _is_trading_time(self, current_time: datetime, market_info: Dict[str, Any]) -> bool:
        """判断是否为交易时间"""
        # TODO: 实现交易时间判断逻辑
        current_hour = current_time.hour
        return 9 <= current_hour <= 15  # 简化实现

    async def _check_symbol_data_feed(self, symbol: str) -> Dict[str, Any]:
        """检查单个合约的数据源"""
        # TODO: 实现数据源检查逻辑
        await asyncio.sleep(0.1)  # 模拟检查延迟
        return {"connected": True, "delay": 100}
